Observation des domaines en rubans dans les lames minces de fer pur par microscopie électronique

Abstract

Des observations de domaines magnétiques dans le fer pur aminci sont faites par microscopie électronique (méthode de Lorentz). Les lames ont une orientation préférentielle (111). A l'intérieur des domaines on observe une structure en rubans (stripe domain) pour des épaisseurs supérieures à 1300 Å. Ces rubans sont parallèles à l'aimantation moyenne de chaque domaine. Un modèle simple d'oscillation de l'aimantation est proposé et analysé.

The Nucleation of Stripe Domains in Thin Ferromagnetic Films

“…As an example of the more general case that the directions in the plane of the films are not all magnetically equivalent we shall treat in Section 4 (1 11)-oriented monocrystalline Fe-films. Stripe domains for such Fe-films have also been treated recently by means of the @*-technique by Bourret and Dautreppe [5] and by Bourret and Kleman [9].…”

Transmission Electron Microscope Observations of Ferromagnetic Domain Structures

“…one or other periodicity is shown depending on the Bourret and Dautreppe [7], Bourret and Kleman [23] angle a,. For g parallel to the domain directions the have used the difference in intensity of the bright field periodicity is 2 D whilst for g perpendicular it, it is D.…”

“…Equation (7) shows that at a large distance bAow the specimen the interna1 deflections along y at any position x , within a Neel wall are exactly compensated by the stray field deflections. In the case of thc Bloch wall the compensation is between the stray fields above and below the foil.…”

Investigation of magnetic domain structures in { 111 } silicon-iron single crystals

“…17.64 1. Introduction. -The ferromagnetic domain structures of Fe-3 % Si single crystals oriented parallel to (111) are not very well known [1 ], [2], [3] ; except in very thin films (d ~ 2 000 Á) for which a more complete study has been made [4] ; [5].…”